This is meant as constructive criticism, not bashing. I am all for more companies carrying electronics components, but some of your component prices and shipping charges seem a bit high. $2.50 for an LM35 PLUS $5 to ship it for a total of $7.50? I can buy an LM35 from Mouser WITH shipping for $6.20 total. Once your shipping charges are factored in, your prices are not competitive at all. I think if you get your shipping charges in line you would be much more successful.