You can use Pseudomonas as foliar spray. For this you can use Liquid. I used 3L for 2500 banana. It costed me 250rs/l. Mix with 50L water and spray. I got foliar spray as well as soil drenching.
Trichoderma can be used in powder form but it is economical only when you use it along with FYM. Mix 10L water and 1 KG trichoderma and 1Kg Jaggery stir well and sprinkle on 1ton of FYM. Keep it covered with agri waste like banana leaves/coconut leaves (not with tarpaulin or silpaulin). After 15 or 20 days you can use it. in this case if you use 10Kg of FYM to per pit you are consuming effectively 10Gm of Trichoderma. Here we are increasing the the microbial count by adding jaggery syrup.
If you want to apply directly to pit 25gm/pit is right dosage. for 1000 plants you need 25Kg of trichoderma, which will cost you 3000/rs at 120rs/Kg. or 4750rs @ 190rs/Kg
UAS dharwad sells Trichoderma at 120rs/Kg and Pseudomonas @ 250rs/Kg. Private companies sells at 190rs/Kg
Nowadays almost all companies selling bio compost enriched with these micro-organisms. and they cost you 10000rs/ton to 12000/ton.
Check Navabharat Fertilisers, MCF BioGold