[serene911]

The factory acid/chemical etch is very fine as you will see. You really can't
use any kind of a sealant on the surface.If you tried to, you will find that it will
turn the etched surface more clear and more than likely impact the overall
appearance in a negative way. The best way to keep it clean is to use Sprayway
glass cleaner,comes in a can and is a foamy alcohol based glass cleaner. Spray
it very liberally on the surface and wipe down softly with a terry cloth or small bath towel. It is a rather delicate surface and you will find it will pick up fingerprints
etc. rather easily.
A sandblasted surface is more substantial and a sealer can be used on it,which
does help protect the surface. On the inside of the shower you can use a product
like Rain X to minimize water spotting then use a squeegee. Do not get any Rain
X on the etched surface !!
The benefit of custom sandblasting is that we can leave a clear border around
the perimeter or do a design that breaks up the large field with clear design
lines that visually looks better. $ 4000.00 does seem high.If a client is going
1/2 inch tempered glass, frameless with the nice polished stainless hinges and
door handles it does add up though. Good luck and hope this info helps.