I see $10-20/coin as easily possible. I'm not saying likely necessarily, but possible. That puts it in the range of LTC.
If there is a big increase in BTC then it could go much higher.
let's look at the numbers
LTC total supply: 84 million
XMR total supply: 18 million
LTC current exchange rate: 5.25 USD
=> Total fully mined market cap op LTC = 441 M USD
To be "in the range" of LTC, 1 XMR needs to be 441 M USD/18 M = 24.5 USD
At the top, 1 LTC was around 50 USD => possible bubble top for XMR is 250 USD