I prefer and always have an eye out for compact accordions, and have had the good luck of acquiring two of these. One in black, one in white identical to the OP's and looking almost as-new, like the OP's. They are both LM, a sound I prefer for tango and Balkan/gypsy/Eastern European.
Prices have gone up somewhat. My black one was literally like $350, maybe 8/10 years ago, purchased on impulse from the 'bay, from someone in Canada. I was astonished to unpack an impeccable, pristine example. Linked below is the very white one I acquired about four years ago, priced at $600--I purchased from this gent in New Orleans who is demo-ing it here. Can't recall now where I came across the sale listing, I don't think it was the 'bay:
Liberty Bellows in Philadelphia prices them around $1200. There are several youtube demos of used examples they've had in and sold--They came in red, white, and black, and samples of all are on view in LB clips, all priced around $1195. Here is one clip (priced about lower longer ago). There are more on the 'tube: