I am always happy to combine shipping for you - the post office determines the shipping by size and weight of the parcel. On average it is less expensive to ship more patterns together as a small parcel than to ship them separately as oversized envelopes.
I Ship within 48 hours (usually 24 hours) of receiving payment except for Sundays and Legal Holidays of course.
If the pictures in the listings aren't clear enough, please email me and I can send you the scans directly through the regular email ( they usually show up better and larger ).