We just have to wait a little longer. The price of 1.1 Leo/LBI has not yet been reached on HE, because the real value of LBI is also not yet 1.1 LEO. The 1.1 was set a bit above the real value to not have to adjust the price too often.
I would simply wait a little longer before panicking and deciding something. At the moment it is cheaper to buy LBI on HE.
If in 4 weeks the purchases are still low, then we can consider ending the sale.
The time after the LEO airdrop will be interesting