I tend to prefer an hour, and there has been a rise of cheap profiles especially on Viva lately, but although tempted to see if it's a genuine bargain I tend to move on, it really is just too cheap. Either there is going to be a load of unannounced extras, it'll be a B&S, or more worryingly a lacklustre performance from a lady who doesn't want to be there.
If the pictures were genuine and the experience any good, they would be able to charge just a little under the average for the area and still be as busy as they like.
You still always wonder if you are missing out on a gem, even though you know you are just dodging a bullet.