There was an interview you can find here :
https://tbc.wowhead.com/news/holly-l...d-phase-323548
She stated "Reducing costs on Arena Point and Honor Point gear
prior to the end of Arena Season 1."
I think that interview is as definitive of an answer as ull get. With patch hitting the 15th, I do not know if that means u can expect the price to drop within the next 2 weeks, or if there will be a reduced price between the seasons before they convert Arena points to honor points. Id guess the former based on how thats worded. Either way id continue saving points
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Just found this as well on a blue post:
The following week (September 7 in this region), we’ll end Arena Season 1 with the regional reset. This will begin a one-week offseason, and the adjustments to Season 1 Arena and Honor gear costs will go into effect.
Burning Crusade Classic Arena Season 2 will begin with the regional reset on September 14 in this region.