It's a Stagi English A 48 S Tenor without decorations, it has a stagi bag with it. The bag cost about 60 USD(but I paid in SEK, so it's approximately), the concertina itself cost 653 USD(paid both in SEK ofc)
It's barely played and I think it had decent quality, but I can't say since I do not know much about these. Been in it's bag for most of the year.
The reason for selling it is not due to any disappointments with the product but because I can't play it very well at all. I am a keyboardist and I'm not very experienced in that area yet either. So I'm probably going to buy a melodica to "replace" it, being a portable free reed instrument as well, difference being that I know how to play keys and have had experience with playing melodicas before.
If anyone has any other idea of where I could ask on the net about the price, I'd be happy to receive a link to the place. EDIT: The title was cut off, this thread is asking about what price I should sell it at.