Just wanted to know what people think of this plane, looks quite good price. Is it good on frames?

Frame rates are very good - maybe even better than the standard fsx aircraft. The model is in my opinion very good. It is a model "from the early days of FSX". At the time this model was created the developers did not know as much about FSX as the do now. As a result some more current addon aircraft like the AS Bushhawk or the A2A Cub in development have (will have) some realism features that are missing in the Beaver (like realistic engine management and weight and balance effects, side slipping behaviour etc.). The newer models are often more complex (more polygons, more complex bump mapping), but also heavier on the framerates.
Personally, I have a lot of fun with the Beaver.