For full context, see here:
https://www.docdroid.net/dEbqqGI/img-20170816-0001-new.pdf
The sentence in question is from line 13-14:
ほかにいいの、ありませんか。
In context of this dialogue, there's a high amount of uncertainty on my side about the possible meaning of this sentence. xD
I could imagine that it's something like "Don't you have one which is good besides that/good in other aspects as well." Something along these lines.
This ほかにいいの is just too cryptic for me...^^