Maybe not worse, but not any better either - don't waste your money. Have you looked at forks on Ebay? Check this out. It has the IS disc mount, 28.6mm stanchions (same as the Dart), 100mm travel. You'll pay more for the shipping than for the fork itself, but I think it's still in your budget. I'm recommending it because I just bought one of these for one of my "guest" bikes and IMO it's a better fork than that price would suggest. BTW, it's an auction listing, but this seller keeps selling and relisting the same items, so eventually you will get one for the opening bid.
Obviously if you find something in your region it'll be way cheaper, but I didn't see anything today on ebay.uk.