Tim mentions RKR above.
RKR is Roots Knotty Roots, a gigantic database of Jamaican, British, USA and Candian reggae releases dating back to the late 50's.
You can search by artist, label, producer, matrix number (vitally important on Jamaican records to identify blanks), even by rhythm (I refuse to say 'riddim'), you get info on both A & B side of the record.
This was originally available on a disc, for windows only, I've been using it for nearly 10 years and it's indispendable.
Last month, they put the entire database online, I have just paid $25 for a years subscription.
There are something like 70,000 releases dealt with.
So basically it certainly is possible to get something like this on line, RKR does not have prices, but there is of course the option to put prices on.