Several possible places:

1. MC Home Depot (near Meralco)
2. Wilcon Depot (along EDSA, near Muņoz)
3. The building beside V.V. Soliven (along EDSA) that sell's lighting fixtures. You can't miss it.
4. The building approaching Shaw Blvd. (coming from Guadalupe). You can't miss it: it's full of lighting fixtures.
5. Some shops at SM Mega

Price range: P 1.5K-450K (depending on the brand, origin and materials used).