Just now posting...sorry so late but this is a shot of some of the eggplants sprouting. I sowed the seeds on January 31st and predicted the seeds would probably sprout on February 10th. Pretty conservative guesstimate, but I've never used a heating mat before, and just assumed that the seeds would sprout early, but not within 4 days. I absolutely love the Vivosun mat, wished I could've gotten a larger one, but I'm glad I was able to afford what I got.
Now, the mat isn't that pricey, my budget is very tight and something that might be affordable for others, isn't for me.
So, if you're looking for a fairly priced heating mat, checkout the Vivosun, and get a jumpstart on the growing season!