Tried Liptons once. On our very first trip to the USA, we needed a decent cup of tea. Visited Walmart, bought really expensive pack of Liptons which I think was one of just a very few teas among millions of coffees. Made tea, instantly regretted it. Surprising considering it's from Unilever who make the UK's best seller: PG, which is OK but a bit weak.
The place we stayed that leg got most of a pack of free tea bags, and we found somewhere that could make tea - without ice or lemon. :)
Thankfully plastic tea bags don't seem to have become popular here. Asda (Walmart) did them for a while, so we switched brands.