I’m not sure if this is ‘new’ news or if it has been available for a few weeks.
However, both ba.com and avios.com are now showing an increased cap for purchasing Avios. It has been lifted from 24,000 per year to 27,000.
I generally do not recommend buying Avios. If you must buy them, I generally recommend waiting for one of ‘30% extra’ promotions that turn up on a regular basis.
However, if you absolutely, desperately, necessarily must buy some at short notice, you will now find the new higher cap in place. The price for 27,000 is £447 ….