Lighting advice for a 18x18x24inch terrarium

Hello guys. I'm doing a bit of research because I plan on building a tropical terrarium for mostly moss and mini orchids (a bit inspired by biotope_gallery). After a bit of reading, I came across with the subject of lighting. I have seen stuff like the terrasky or the arcadia jungle dawn. However, they are super expensive and I don't want to go bankrupt. Do you guys have any suggestions about "affordable lights" that can be used in this kind of builds (i.e. i don't want to fry my plants lol).

Thanks in advance