Do they make R7s Bubls which are sodium

Hi im looking for a cheap way to get a High Pressure Sodium Or a Metal Bulb R7s connection
but i want a r7s bulb which is like a floodlight
http://www.bulbman.com/images/t3r7scl120.jpg

Not the Halogen bulb which is the same one.

i know they made them but only in a small wattage like 50w and 150w but i cant find where i can buy them .. as it is a very cheap way ..

If you dont know what iam talking about check this out New Metal halide bulbs: Metal halide bulb features R7S base

why not just get a few small CFL lights ?

Lol cost and many other reasons lol lumens
one of those bulbs cost $2.99 lol 150w Metal halide bulb features R7S base has about 13000 lumens for that it would cost about a hell of alot more than $2.99 and its a better light source than cfls but i have alot of CFLS already but they dont work great. Whats Why...!!

Lol FOB Shanghai prices are $2.20 and $2.25 for the 70 and 150W versions But it costs £22.50 for it after the company buys them WTF around a $20
New Metal halide bulbs: Metal halide bulb features R7S base
Metal halide bulb R7S - Google Product Search