johnwasser:
Jantje:
To me (and you) they are quite affordable but it still is 10% of the budget of OP. ]You can get them direct from Hong Kong for just under $4 (including free shipping). Just search eBay for "USBasp". Note that they usually come with only a 10-pin cable. To use them with an Arduino you will need to adapt them to the 6-pin connector. You can find 10-pin to 6-pin adapters on eBay but they will cost another $4 so someone on a tight budget might want to fabricate their own cable.
Yes, that's why I bought the one I listed as it's cable has both 10 and 6 pin female connectors on it. Saved needing to buy the converter adapter.
Lefty