upto 100 dollars or upto to the range of 10 dollars.

[david11]

2)I want a hotel room upto 100 dollars.

My friend wrote this sentence. I think the natural one would be "I want a hotel room upto the range of 100 dollars." Am I correct?

[Barb_D]

"Up to" should be two words.
I will pay up to $100 for a hotel room.
I want a hotel room for under $100.

[emsr2d2]

Alternatively, you could use:

I want a hotel room which costs up to 100 dollars.

$100 is not a range. It is an exact figure, so we wouldn't say "up to the range of $100". You might want to book a hotel which has prices ranging from $50 to $100.