Combining MAX, ROUNDUP & IF for the same cell

Hello!
I am trying to create one formula (in one cell) so that it performs the following three things:
1) Rounds any number to the nearest dollar
2) Makes the minimum dollar value $2.00
3) If another cell (G2) reaches $100.00 or more, I want it to revert to another cell's (B2) value.

So, in essence, I want to combine the following two things:

=MAX(2,ROUNDUP(F2,0))
AND
=IF(G2>="100",B2)

I do not know how to correctly order these so that it performs all three things I'm looking for it to do. I've posted this before, but was given an answer that created a circular reference and did not make the minimum value $2.00.
Any help would be appreciated!
Thanks in advance!

Presumably the G2 test must take precedence:

=IF(G2>=100,B2,MAX(2,ROUNDUP(F2,0))

If the cell in which this function resides is any of G2,B2,F2 or any of G2,B2,F2 reference this cell in their calculations then this would be a circular calculation.

Based on the info given, your two formulas are pretty much ready to go, simply insert the first formula into the missing FALSE section of the second formula:

=IF(G2>="100", B2, MAX(2,ROUNDUP(F2,0)))

If you put a formula IN cell G2 that refers to itself, that is a circular reference. You will continue to receive errors until the formula stops referring to itself.

How about this:

=IF(MAX(2,ROUNDUP(F2,0))>100, B2, MAX(2,ROUNDUP(F2,0)))