Robot vacuum cleaner comparison

I'm using two robot vacuum cleaners that are Roomba and Mamirobot, now I want to discuss about comparison of A/S for these two products.
The first is expendable part (we simply think that we need to change the expendable parts for automobile one day, if we keep using automobile)
Sometimes the parts are very expensive, so we should think about price of the parts.

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ROBOT CLEANER COMPARISION>

  

This is the each part price for both products.
Battery for Roomba is $75 /for Mamirobot is $39

Side brush for Rooba is $15 / for Mamirobot is $3

Filter for Roomba is $15 (One filer can use several times but it should clean each time of using)

One packet, which includes 30pcs of disposable filter, is $3


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ROBOT CLEANER COMPARISION>

After Service
Roomba - A/S is done through the contracted agency
Mamirobot- A/S by Mamirobot Service center in the main office

<ROBOT CLEANER, ROBOT VACUUM CLEANER, VACUUM CLEANER, ROOMBA, MAMIROBOT
ROBOT CLEANER COMPARISION>

 

During one year using experience of two robot cleaners, I think Mamirobot has got the better service than Roomba and as well as disposable part.