Nobody's buying

I´ve noticed a decline in purchasing power around my area in the last year or so.

Yesterday i organized my collection an put everything i don't use on sale, to finance some staples i'm lacking for finishing modern meta decks.

I posted in the facebook page of the city, which has 9.000 members and has lots of movement, but nobody has even asked.

I posted decent card but i'm feeling like nobody wants to invest in mtg, specially in modern, as the rotation is killing the value of card so fast it's not worth it.

I'm going to post on tcgplayer even though is less comfortable for me, but i can't shake the bitter taste off my mouth. Is this gonna get worst? Can it get worst?

Edit: For those of you asking how i'm pricing the cards. The group had a long standing standard which was median on tcg. Another formula was 10% off cardkingdom. That way we didn't have to put the price on each single card, and we also had the ensurance that we could deliver by hand or left the cards in one of the stores.