What can I buy with රු1,816

You can buy one of the following:

Shark Attack
Retro toys for £8 (රු1,552) from hawkin
Giant Wine Glass
Gifts for £8.50 (රු1,649) from hawkin
Scientific calculator
Casio FX-85GT+ scientific calculator for £7.99 (රු1,550) from source
Build Your Own Camper Van
Retro toys for £9 (රු1,746) from hawkin
Giant Beer Glass
Gifts for £8.50 (රු1,649) from hawkin