£94.99 and £197.99 at MyBeauty.Boutique, checked 22 Oct, 22:10 UK time: the Y 150ml Refill is £103 more.
“Y 150ml Refill” in its name, against “Mon Paris 50ml”.
We don’t test products. Facts are the makers’ and shops’ own words; prices are those we read, with when. A price can change after we read it, and delivery may cost extra.