Is it me, or is there a resurgence going on in the cassette player market?

A year or so ago, it almost seemed that you couldn't giveaway a cassette deck - and there were some very nice decks (e.g. two head Naks) going for less that £50 on ebay, and only the occasional super deck (Nak Dragon for example) getting sold for hundreds of pounds.

Now, there seem to be quite a few decks for sale over £100. For example, this Aiwa AD-810 deck is 2 to 3 times the price I'd expect to have seen it at a year ago.