Buy or rent an excavator for house construction and garden landscaping?

The idea sounds nice at first, but I see the bigger problem more with the sale than with the purchase. Who would buy such a machine from you as a private person again at a "fair" price? I don't see a market for a private sale.

Selling will not be a problem because he can set the price and everything goes abroad, rather buying something decent that does not break immediately will be difficult.