Nearly all retail providers have some sort of "if we have downtime, if you complain, we will refund you for the time you were down" SLA. The pennies you get don't compensate you for the time it took to complain, much less the lost business from being down. Look at all the companies advertising a 100% SLA; I mean, even 99.9% is unrealistic in most cases without some very expensive hardware or application-layer redundancy.