Quote - I've never played or worked for SL ,don't know anything about SL.

Second Life store has cloths for L$450.00

So L$450.00 is SL play money ? you get in the game ?

So if you sold SL stuff you only get SL play money and no real world money ?

Exchanging L$ for real world currency is subject to certain limits.
My personal limit is USD 2500 per month via PayPal.

Limits vary for residents of different countries, but payment is made in their local currency.