The current best available offer for the Chase Business Ink Bold® Charge Card is for 25k points after first purchase, then an additional 25k points after $10,000 in spend (application link here – I do get an affiliate bounty via that link).
Previously, they had offered 50k points after $5,000 spend. That offer now appears to be back via these 2 links (neither of these are affiliate links) (SORRY, THESE ARE NOW ALL DEAD):
Since these “secret” links come and go quickly, it’s better to have 3 different ones available in case one disappears.
For those who can hit $5k in spend in 3 months, that’s a better deal than the 25k/25k link above. But if you have very low spend, getting 25k points after first purchase beats not getting those points at all.