Hi 1835hollywood.....welcome to TFF.
I haven't been able to find a reference to an INA Tiger in any of my reference books, but here's what I found on Google:
"Industria Nacional De Aarms (INA) Brazilian copy of the S&W J-frame double-action 5-shot revolver, w/4.25” bbl, .38 Special, fixed sights, all blued steel, in original factory box."
"I assume it to be a cheap handgun."
I think you assume correctly.......
Sounds like a pretty typical cheap knockoff of an S&W J Frame. Unless you're in the market for a $100 paperweight, I'd pass on this one.