Are you perhaps looking for free transaction accelerator?
Unfortunately, they are the only one that accepts free acceleration service but only for 10sat/B transactions or above.
Any other free accelerators are fake services that only re-broadcast transactions which you node already did.

Or a cheaper option?
AFAIK, the suggested "service fee" is based from the transaction's size and number of unconfirmed parent(s).
I doubt other paid accelerator will charge you considerably less.