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That looks like a celestron astromaster - either 114 or 130 mm primary mirror. A little unusual because most astromaster scopes are black colour. The white would make it easier to find at a dark viewing site.
I dont see the rod for holding the counter weights - it is a metal rod about 40 cm long and half cm diameter, used to hold the weights to balance the tube. It may be at the top of the assembly, but it is not clear in that picture. Everything else looks like it is in the picture.
The 130 can be bought new for about $400, so private sale (without warranty and without original packaging) would be less than that. The 114 would be less again. eBay often has similar items listed for under $100.
That is a good beginner scope, although the finder that comes with it is a little hard to use. It should give reasonable views of some of the brighter clusters and nebula, even better for the moon and Saturn or Jupiter. Probably not suitable for fainter objects such as galaxies.
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