I think FT can be done very cheaply - if you fancy the challenge of doing Sporting FT.
My current kit:
2nd hand HW97K - £200
New Nikko Stirling 3-9x42 Airking off ebay - £46 (including 1 piece mount)
Beanbag seat I bought 4 or 5 years ago for £25.
Ummm, yep, that's the lot, just need to buy pellets as I go along.
It must work out surely as one of the cheapest hobbies/sports to take part in.