Nice review of Peakmonsters @cryptollamatv! I use the site all the time to rent out most of my collection. I generally just use the set lowest bid function unless it is about 2 days away from the end of the season where I cancel some rentals and re-list them at a fair price.
My interest is not having cards sitting idle and instead of making sure most of them are being rented out.
Thank you :) PeakMonsters is truly a wonderful interface. Yep, sounds like you're getting the best out of the lowest bid function. Nice one!