Is there a cheaper way of getting protein into your diet for muscle building without buying fish etc?

Skim milk, non-fat yogurt and Whey powder from warehouses (costco).

GO TO GNC AND BUY A PROTEIN POWDER, IF YOU DON'T WANT TO EAT FISH OR MEAT, JUST TAKE A SHAKE.

You can purchase protein tablets and powder at the health food store. Soy contains good protein in many forms, soy milk, bars, cereal (Kashi Go Lean cereal has 13 grams in one serving). Dried beans and peas are a good cheap source of protein.

Yeah....u get protein supplements at most phcys and also at Walmart type stores. Also eat lentils, tofu and eggs (yellow) (lentils available at most indian (India) stores )

tablet for protein? man those would be big.
Try eggs. you don't have to eat the yolks. you can take them out. pure protein yumminess

you could try tofu