I have a full-sized Pegasus. It comes with all the lights and wiring inside. It stands about 5ft high.

have you plugged it in it has an u shaped lite tube in it that would be hard to find would affect the value quite a bit

Actually those U shaped tubes aren't all that hard to find. I bought at least 3 of them in the last 5 years and I think I have an extra!
I have sold 2 of those in the same time frame and I received $550 for one and $750 for one. They are actually a very nice display piece, even though they are fairly newer and fairly common. I see several in use yet today!

Kevin is correct I bought 3 U bulbs a year ago just have to search abit

I posted here to see how much people thought it was worth.

If my eyes aren't failing me, it appears Kevin did give an estimate of value above......

My guess would put the price roughly between $550 & $750! LOL