It would be interesting to know who made the Higgins; it's bound to be one or another jobber who built them for the mail-order business. I think
(don't hold me to it) that Hi-Standard made the model 20 pumps. You could ask in the Gun ID forum. If you do that, check the archives first--Marland S. & co. may have already written about it.
A great deal of its value as a shooter depends on its condition. There are some pretty low-cost but reliable semi autos around--you might try finding a used Remington 1100 in good shape. Better service, parts, and accessories (spare barrels, chokes and the like).
That said, if you like the gun and it's in ok condition, to each his own. It's possible to love a poly-choke!
I'd be interested to hear how it works out.