If I spend $11 on 880 robux two times a month and $9.99 on 1000 one time every month, How much would I spend for 17000?

First, let's find out how many times you would need to buy 880 robux to reach 17,000:

17,000 ÷ 880 = 19.3 (rounded up to 20)

So you would need to buy 880 robux 20 times to reach 17,000.

Each time you buy 880 robux twice a month, it costs $11, so:

20 x 2 x $11 = $440

You also buy 1000 robux once a month for $9.99, so:

1 x $9.99 x 12 = $119.88

Adding these two amounts together, the total cost of buying 17,000 robux would be:

$440 + $119.88 = $559.88