The outlay will be the same no matter which solicitor you go to so you shouldn't include that when considering a quote.
I only paid 1300 for a more expensive second hand house plus an equity release from my existing property. I also got 700 refunded from my lender plus they paid for the valuation. This wasn't handed to me on a plate, I had to bargain hard!
You can definitely get a better deal, you just may have to change to a solicitor used by a lender who will give a bulk business discount.