I installed some solid oak floors last fall. Home Depot had the wood for $2.?? per sq ft. Pretty reasonably priced. It doesn't have the same appeal as varying width floors but it's more durable than pine. Finished for less than $.30 per sq. ft.
With only 300 sq ft, Lumber Liquidiators often has bargain prices of batches of exotic woods. I got some 6" wide finger jointed solid oak pre-finished from them a few years ago at $3 a square ft.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13