# Glossary

> The Boogie Data API and MCP server are launching soon. Reports, fee calculators and methodology on this site are live now.

Plain definitions of the terms used in Boogie Data's short-term rental, card, comic and fee data. Each term says how we measure it, what it is not, and which fields hold it, for investors and dealers reading our pages and for developers reading API responses.

- [Advertised nightly rate](/glossary/advertised-nightly-rate/): The price per night a short-term rental listing shows before cleaning fees, service fees, taxes and discounts for longer stays.
- [Stay total](/glossary/stay-total/): The headline price a booking quote shows for a whole stay, after any discount for a longer stay and before taxes.
- [Minimum stay](/glossary/minimum-stay/): The fewest nights a listing accepts for one booking.
- [Available nights](/glossary/available-nights/): Nights on a listing's calendar that a guest could book on the day we looked.
- [Booked nights](/glossary/booked-nights/): Closed calendar nights we classify as taken by a guest.
- [Blocked nights](/glossary/blocked-nights/): Closed calendar nights we classify as closed by the host rather than booked by a guest.
- [Occupancy ceiling](/glossary/occupancy-ceiling/): The upper end of our occupancy estimate: booked nights plus nights whose cause is unclear, as a share of the 90 nights after each observation.
- [Nights taken and released](/glossary/nights-taken/): Calendar nights that changed from open to closed (taken) or from closed to open (released) between two observations of the same listing.
- [Active listings](/glossary/active-listings/): The number of short-term rental listings a public search page reports for a destination.
- [Review count change](/glossary/review-count-change/): How many reviews a listing gained since we last observed it.
- [Permit required](/glossary/permit-required/): Whether a town requires a permit or registration before a home can be rented short term.
- [Permit cap](/glossary/permit-cap/): A numeric limit on how many short-term rental permits a jurisdiction will issue.
- [Moratorium](/glossary/moratorium/): A pause on new short-term rental permits.
- [Lodging tax](/glossary/lodging-tax/): Tax charged on short stays, also called transient occupancy tax, hotel tax or room tax.
- [State preemption](/glossary/state-preemption/): How far state law overrides a town's own short-term rental rules: fully, partly or not at all.
- [Local rules verdict](/glossary/local-rules-verdict/): A one-word summary of a town's short-term rental rules: permissive, restricted, hostile or unknown.
- [Sold price](/glossary/sold-price/): The price a card, comic or collectible sold for, as the venue's results page shows it.
- [Buyer's premium](/glossary/buyer-premium/): A percentage an auction house adds to the winning bid, paid by the buyer.
- [Price basis](/glossary/price-basis/): A label on every price that says what the number includes: a hammer price, a price with premium, an asking price or a price where the venue does not say.
- [Grade](/glossary/grade/): A grading company's condition score for a card or comic, such as PSA 10 or CGC 9.8.
- [Certificate number](/glossary/certificate-number/): The serial number a grading company prints on the slab of a graded card or comic.
- [Grade population](/glossary/grade-population/): How many items a grading company has certified at each grade.
- [Page quality](/glossary/page-quality/): The colour of a comic's interior pages as the grading label states it, such as white or off-white.
- [Signature series](/glossary/signature-series/): A graded comic signed in front of a grading company witness, with a label that says so.
- [Comparable sale](/glossary/comparable-sale/): A completed sale of the same item, at the same grade or at another grade adjusted to it, used to judge what another copy is worth.
- [Realized price](/glossary/realized-price/): An auction result where the auction closed with at least one bid, so the price is a real sale.
- [Lowest ask](/glossary/lowest-ask/): The cheapest price a seller is asking for an item right now.
- [Seller fee](/glossary/seller-fee/): What a venue takes from the sale price before paying the seller.
- [Fee tier](/glossary/fee-tier/): A price band or seller level that changes the fee rate, such as a lower rate on the part of a sale above a set amount.
- [Observation date](/glossary/observation-date/): The date we read a value from its public source.
- [Missing value](/glossary/missing-value/): A blank in our data means unknown. It never means zero.

How each family of data is collected: [methodology](/methodology/).