for paypal, it is always tricky, because buyer can anytime reverse payment and seller (of LTC for example) can't do anything with it, because payment and non-reversible. so you will be pushed most likely to pay premium price for those litecoins, because seller needs somehow to "cover" risks and non-comfortable situation for him.
to buy litecoin directly, you can try https://www.litecoinlocal.net, but there are not so many sellers worldwide, so imho much better option is to buy bitcoin from https://localbitcoins.com and then use https://shapeshift.io to simply swap it from btc to ltc.)