A dedicated sim racing cockpit with a direct drive base and load cell pedals is built to handle serious force feedback. Cheaper desk clamps shake loose and rattle, so buying solid steel and proper hardware up front means you only buy the setup once. Hardware makers follow quiet winter release cycles, which means last year's cockpit frames and wheel bases offer nearly the exact same performance at a much lower price point.
If you time your purchase well and spread out the cost cleanly, you can put together a complete $900 rig without draining your checking account all at once.
Keep in mind that 15 months of zero interest is a strict deadline, not free money. If you still have a balance when month 15 ends, the regular variable APR kicks in on whatever is left, which quickly wipes out the deals you found. Treat that $60.00 monthly payment as a fixed bill to zero it out before the intro window closes.