How should a team fundraise with the FIRST E-Watt Saver LED Bulbs?

[Techhexium]

Hello, my FTC team has recently received the FIRST E-Watt Saver LED Blubs. My team has split the blubs so each member sells 4 bulbs, but I'm not sure about how much I should sell the bulbs for. I think $19.99 is too expensive, I realize that each sale will benefit me and the consumer a lot, but I'm trying to sell these bulbs to people who have never heard of FIRST.

So can someone suggest me a good way to approach this? Thanks!