I find it weird. Its been agreed by some that price doesnt equate to how good a WG necessarily is, which i know as a fact from experience is correct.
Yet those WGs who charge low rates are thought dodgy automatically by some, in reality some may well be dodgy just like some WGs who charge higher fees, but others arent and they might not be charging such low rates for long, they do it to get punters in initially in some cases. To some EE WGs £70 an hour is good money and i have punted with a WG at this rate who was good and many times with WGs at £80 an hour.
I always go on the individual WG myself rather than what she charges if within what i am prepared to pay. I dont rule WGs out as being too cheap, whatever next, talking prices up which some fluffies do.