Is that 2000 British pounds sterling? That seems high?
In the US I paid $300 for glasses with progressive lenses and my eye insurance covered the whole cost -- Many US eye insurance carriers pay for a new pair of glasses aevery two years.
My progressives work fine and it only takes about 1 day to adjust to them.
Yes they are that expensive (although I didn't pay anything for them). The price you paid is definitely more typical. I adapted to mine quickly too I just don't like them very much.