Hard top for Mk3

[8bit]

Any advice on where best (read; cheapest) to get a hardtop for a mk3 MX-5? Last winter it was a pain to have to keep shovelling snow off the fabric roof, sometimes twice or three times a day. I've seen them on the likes of mx5parts.co.uk for over a grand, can they be had much cheaper than this? Don't mind buying a used one so long as it seals OK and is in otherwise good condition.

Cheers in advance