I agree with Rammplins on the light selection. Those Viparspectra lights seem to be the most bang for the buck right now in the <$100 range.
Here's one that I'm looking at picking up soon: VIPARSPECTRA Latest XS1000 LED Grow Light, with Samsung LM301B Diodes (IR Included) & MeanWell Driver, Dimmable Full Spectrum Plant Grow Light for Indoor Plants Seeding Veg and Flower
That's a lot of light for around $100. Combine that with a meanwell driver and Samsung leds and you've got quantity and quality.
For nepenthes, I'd focus on a light that can be placed fairly far from the plant since you'll need broad coverage once it gets leggy.
I'd avoid blurple lights since they just look weird, are harder on the eyes, can mask problems with your plants, and don't perform as well as the more recent white leds.
I'd also look for lights that have a fairly broad base so the light is coming in from multiple angles and can penetrate the canopy. I have an old blurple light that is just a single point source and it casts strong, distinct shadows which causes the plant to grow strangely.
I'd also avoid lights with fans if the plants are going to be in your living space. That constant whir can quickly become incredibly irritating.
Hope that helps!