Remote control of the key defective > Alternative to spare part searched

Moin together, at the key of my S40-II, year 2007 the remote control of the key is defective. The dealer wishes for the replacement of the radio module fabulous 200€ !! I find this completely unacceptable. In the price are in the understanding about 50 € for a software to be able to code the key again. Also this is not understandable for me. Have also once directly addressed to Volvo, unfortunately no answer. Therefore here the question, someone knows a cheaper alternative, e.g. used S get clüssel (Ebay) and then have it recoded ? Best regards Jan