Hello, all.

I'm going to be in possession of a Mayfair 30-button concertina soon.

I'm a total newbie to the instrument. I'm told it needs hand straps and that a couple of the keys sometimes stick.

There's an accordion shop near me, and they've specialized in sales and repairs for a long time now.

Is there any way to venture a guess as to how much these repairs might cost? Perhaps a best-case/worst-case scenario?

Thanks!