How we collect prices

Every price is a real listing, auction result, rental rate or calibration price on a public page, saved with its URL and the date we saw it.
We never estimate or average prices into a single "value". You see the range and every source behind it.
Prices stay in the seller's currency. We don't convert currencies.
"Used" includes refurbished dealer stock. Kit contents vary, so check the note on each listing.
Reader submissions are checked against their source before publishing.