You dont need the most expensive decoys. Ill tell you what will get you by for less $$ than you may think possible! If I had say $120-150 too spend this is how I would do it.

buy 2-3 dozen ghg hotbuy mallards, cabelas $24.99 a dozen $50-75 total
http://www.cabelas.com/cabelas/en/templates/product/standard-item.jsp?id=0020896225978a&navCount=1&podI d=0020896&parentId=cat20831&masterpathid=& amp;navAction=jump&cmCat=MainCatcat20712-cat20831&catalogCode=QT&rid=&parentTyp e=index&indexId=cat20831&hasJS=true

Line: 100 yards of 400# mono you can buy it for $20 here,, you only need 5-6 feet per decoy. plus crimps another $7. total $27+shipping
http://www.blueoceantackle.com/commercial_fishing_supply.htm

then you need weights: some 4 ounce strap weights, $9 a dozen for 4 ouncers,, personally id go with the 6 oz's. $27 + shipping

http://www.cabelas.com/cabelas/en/templates/product/standard-item.jsp?_DARGS=/cabelas/en/common/catalog/item-link.jsp_A&_DAV=MainCatcat20712-cat20829&id=0005748220066a&navCount=5& podId=0005748&parentId=cat20829&masterpath id=&navAction=push&catalogCode=XG&rid= &parentType=index&indexId=cat20829&has JS=true

Now set them up like this,, if you do all you need now is a $.99 caribeener. you dont need a decoy bag.

http://www.txwaterfowler.com/html_pages/duck_hunting/texas_rigged_decoys/texas_rigged.htm

so for $130 plus shipping (if you cant find this stuff local) you can have a darn good starter spread! as a matter of fact myself and a couple buddies have killed 70 or so ducks in the last 5 days over a spread of 3 dozen hot-buys set-up like this!