Many of the LED's may come way down in price over the next couple of years. Last year at our hardware store, with the regional electric company buy-down we had some Standard A or Medium base 115v 9w & 10w dimmable LED bulbs for sale
at only $1 each! They are gone now. At the same time, and now, the big stores were and are selling these bulbs for $5-$10 each. This week's best Walmart price in this area is $9.97 for a 2 pak of 60 w equivalent 120v LED bulbs. So, look for "electric company subsidized" sales at local stores and at the big stores. The 9 & 10 watt LED bulbs are "60 watt replacement" but the ones we had were as bright as a traditional 75w bulb.
Walmart has 2 paks of 12v 9 LED, 921/922 wedge base bulbs for $8.96. My mistake was buying a 2 pak. They are not even close in brightness to a incandescent 921 bulb which is about 18w.
M4products.com lists a 12v 921type wedge base 24/5050LED which claims 360 lumens for $10 each. If it's true, that one should be brighter than a standard incandescent 921 bulb.
Note if replacing 921/922 type bulbs: These type of bulbs are also used for low voltage landscape lighting
. Landscape bulbs of the 921 type are available at Walmart, HDep., Lowes and Hardware Stores. They will work. But careful, if you need or want a bright bulb. Those bulbs come in 4w, 7w, 11w, etc versions and the standard automotive 921 is 18w. Some stores also have them in colors. Blue, Red, Amber and Green are common.