I make paper earrings using silver findings ( stem and earring hooks) from a and e metals an australian silver recycling business. Postage is generally around $10 however you get your materials within 3 days from experience (I'm classed as regional so there are very few sites I buy from with that kind of delivery speed. Price for a pair of stirling silver earrings hooks type EH06 is $1.30 including gst. These are stamped 975 and are long enough at the back to not fall out. For earrings you can get away with long nose pliers and a side cutter pair or pliers however a pair of round nosed pliers to create a perfect round circle at the end of the stem to attach to the jump ring or directly to the earring hook would not go astray. Cost for good tools varies but expect it to set you back by at least $60.
Is your wife interested in making earrings?