"envato elements" pricing
Envato is a very affordable platform that has cheap stock footage, license-free music. Envato Elements is a subscription base, and for $16 you will have unlimited access to their video, music, effect, etc. library.
ArtGrid is a subscription based Stock Footage site. They cost about $25/month to an unlimited amount of 4K and HD Footage.
Similarly to Envato and ArtGrid, Storyblocks offers a monthly subscription that fits your needs. They have several different Pricing blocks, from $8 – $25.