Unfortunately, without knowing what the exact problem is with the dryer, its impossible for me to give you a price.
What I can tell you is that, if you are unable to diagnose this and fix it yourself, it would need someone to come to your home and do the work for you.
Depending on where you live, I would say that it would cost around £50 for someone to come and diagnose this. Parts, if needed would then be on top .
One company is offering a fixed price repair, as previously mentioned. This would be including call out, labour, parts and vat. This is in the region of £125
A condenser tumble dryer is an expensive item to replace. If its possible, a vented dryer is a cheaper option. If a vented dryer is possible, then I would agree with you, a replacement is probably the better option.
Sorry its not great news.
If you need more help, please just ask me.
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