That's the best way to do it. They both sell gallon sizes of both resin and body filler. Anything you order online that's over a gallon will have to have hazmat charges added, which sucks 'cuz they're a lot. That includes any order of single gallon containers over the quantity of one. You'd have to find someone that'd take one order and ship the 5 containers separately.
hmm... i didn't think about the hazmat thing. Is there anywhere cheaper to get the matt and i could just find somewhere local that has resin? Just that it works out to 5 bucks a yard and im going to need alot of the **** by the time im done.
if you're doing a large area you should probably use fleece or some other fabric then use the liquid resin / glass mix to just paint over it. buying sheets for any large project is probably a bad idea ...
check out 00CericaRuss' job here. maybe shoot him a PM ... he obviously knows what he's doing and can probably tell you where to get your stuff cheap