I have seen reference to two US importers of Felix Sarasqueta shotguns. Felix Sarasqueta was trading on the more famous name of Victor Sarasqueta which was the largest Eibar gunmaker in the late 1970s. Felix was selling low to medium quality guns. J.J. Sarasqueta was the other lower to modest quality gunmaker using the name.
In the early 80s recession there was a bloodbath of bankruptcies in Eibar gunmakers. The imminent collapse of Victor Sarasqueta was one of the key factors leading to the creation of the ill formed and short-lived Diarm Collective of Spanish gunmakers.
The gun in question might well be a competent and useful over/under 20 gauge, but it is certainly an orphan, which if broken, would require making parts. This fact dictates a modest price.
I think it is fair to say that there are lovers of Spanish guns, and those who have nothing good to say about them.
The usual admonition with Spanish guns is "buy the gun, not the gunmaker".