Mathew Knowles Hawking Beyonce Stuff for Top $$$ Deep Discounts on Solange

12/23/2014 12:40 AM PST

Mathew Knowles -- Hawking Old Beyonce Stuff for Top Dollar ... Deep Discounts on Solange

EXCLUSIVE
Beyonce's dad is trying to make ends meet by unloading tons of her souvenirs from her career in a massive garage sale -- which also features Solange stuff ... in the bargain bin. 

As we've told you ... Mathew Knowles is having baby mama troubles -- which might explain why he started selling off some Bey treasures outside his office in Houston last Friday.

As of Monday, there were plenty of items available ... including a giant Beyonce poster for $200, old tour books for $20, and various pieces of House of Dereon clothing. On a budget? You can find a Solange CD for $1.96. 

In the non-Beyonce aisle -- Mathew's also selling office furniture ... so, it looks like a total fire sale.

We're told Mathew shunned an attempt to haggle the oversized Beyonce poster down to $145 ... standing firm at two hundy.

Daddy's baby needs a new pair o' shoes.