"prices ranged from 2,500 to 6,000 "
This would be the usual range. There is no prohibition on quoting a fee as a percentage in either probate or conveyancing work.
The reality of the relationship solicitors and consumers is that
a. There is a great deal of competition in the market place.
b. Consumers usually get multiple quotes and can compare. The cheapest, or the most expensive, is not always the best and it is always better to go with a personal recommendation.
c. Probate and Conveyancing work is not always profitable and the more established firms will be more likely to quote the actual cost of the work even though someone else will do it for half.
d. Consumers are free to do their own Probate applications.
e. Sometimes, rather then refuse work outright ( for a variety of reasons - in my case, where I know the client to be obsessive, aggressive, demanding and rude) quote high rather than tell them you'd rather have your eyes poked out with red hot pokers then ever act for them again!
mf