As alluded to above, any trim shop can source fully molded carpets for a reasonable price, or they can do a custom fit for you (including cutting around the roll cage etc) using flat car carpet off the roll. The custom job should be even cheaper; at least it used to be when I was in the game.

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MY99 WRX sedan WRC blue Sold :(
MY99 WRX sedan Dark blue pearl :D
MY97 Liberty Outback Ltd Wagon
1990 Mk3 Supra turbo fully rebuilt 7M-GTE (Older son)
1991 Celica GT4 (Younger son)