Indeed P@H do sell tropica plants, some in the 1-2-3 grow pots which are lab grown and guaranteed to be free of snails, normally pretty good to get those as long as looks greeen and healthy.
P@H are very much hit and miss when comes to buying livestock and live plants from there, their products are fine, no issue with that side of things. Just when comes to live stocking and plants, very much depends on the P@H in the area, some are good with livestock, some are good with plants but more often than not, not so good really.
If youre buying plants from anywhere, not just pets at home stores, just check the plants themselves, avoid plants with lots of algae growth, withered / drooping leaves, yellowing leaves and colours. You want the young vibrant green plants in good health, there are there if you look carefully and you have to be specific to the staff in pointing out you want THAT specific plant rather than letting them choose the worst ones for you.
P@H also sell tropica liquid fertiliser, theyre not bad, bit pricey but quite good for a once weekly dose of this for your plants later down the line if you decide you want to do this. Not essential as the tap water has nitrate and other minerals that the plants will put to good use, so liquid ferts is not mandatory but it helps the plants maintain good health especially if you have lots of plants.