Yeah, it's quite an exorbitant price for the trip described. It said flights included which I have to hope is the majority of it.
Considering you can fly from London to Chișinău for around £36 at present ($45) on a low cost EU airline, then it probably isn't. The Telegraph is a right leaning newspaper for a wealthy readership, so their travel articles offer luxury. (The details of the holiday provider mention 4 star hotels.)
Plenty of indie travellers potter around in Eastern Europe via flight hops or train, and could spend a similar amount for a whole summer's travel.
It's the Torygraph. Only really read by people rich enough to blow that sort of money on a trip to [checks notes] Moldova.
There's quite a big difference between a tourist visiting a provincial home with a personal assistant, and a tourist visiting a provincial home who is greeted with “Here, axe, chop wood, we cook dinner”.