SLR's download limits are very gracious. If you need to download hundreds of scenes a month, please realize there is a good chance a site like SLR that not only produces its own content, but monthly pays royalties out to studios may in fact lose money. Porn, as crazy as it may sound, does not grow on trees.
Per pricing, do note the economy is not in a good shape. Netflix now is in shooting distance of being the same price as an adult paysite in spite of them getting MUCH better processing rates and having magnitudes more users. That smaller sites (and yes, compared to Netflix, SLR is a small site) and especially those in our industry can hold the fort at pricing the way they have been over the years (or decades now) should be seen as commendable.