I too have looked at those and dang near had to change my undies at the price.
Now.. if you do not mind a bit of cutting and soldering I found some on Amazon, these are not tubes like the direct replacement but peal and stick strips, 5 Meters long, about 10 bucks a roll Can't link to them just now but the info I gave you shoudl find them, They are DAYLIGHT color (come on other colros) which are bright white,, I happen to like that.
I had to cut the roll into strips. then tape the strips to the stripped Thin Light, Then solder jumper wires to connect all the strips together.
More light, less power, Very happy.
Found the link
LED Strips