Hi there. I personally think the Samla is a bit too small for a Syrian. It slopes in quite a bit at the base. It's a good size for a dwarf hamster, if it has plenty of deep substrate in (thus increasing the floor area a bit higher up).
I think the informal recommendation in the US now is a minimum of 450 square inches. One of these would make a good sized bin for a Syrian but they only seem to have them in stock in threes rather than singles. Maybe if you have a store nearby you could get a single one.
https://www.walmart.com/ip/Sterilite...Black/49527425
You can also get a 40 gallon breeder tank for $40 when Petco have their dollar a gallon sales on - not sure when the next one is though.