If you're just starting seedlings to set outside later, cheap shop lights will probably work just fine for you. Just keep them 3" or so from the top of the plants.

I use a 25$ 2 foot t5 Ho fixture. Single light fixture. Works awesome when starting seeds. You can find it any local hydroponics store.

you can use any cheap shoplight - t8 is the best price/light quality etc. look for lamp with higher lumens (amount of light) - paul m.