The cost of care

The average cost to care for an Angel can be from $50.00 a month for the smaller species to $200.00 a month for Macaws and Cockatoos.  This includes food and toys.  If you count the unexpected emergency vet visit it can sky rocket to $5000.00 a year.  Avian vets are not cheap and most of the time you will not know your Angel is sick until it is very very sick requiring emergency care.
TOYS
Whether you make them or buy them a larger parrot can go through $40.00 worth of toy in 15 minutes.  Toys are not a luxury, they are a necessity.  They are needed to help maintain a healthy beak, for stimulation and foraging skills.  There is no such thing as a bird safe toy.  Your Angels should be supervised with any new toy.
Cages!

In this case, bigger is always better.  Make sure your cage bars meet the requirements of the Angel you have.  NEVER use a spray painted, rusted or broken cage.  Start with the biggest you can afford, that way you don't spend again to upgrade!  I am not a fan of dome shaped cages it immediately gives your Angels the benefit of height, higher is power in bird language,
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Playroom
playroom
Owning a parrot is a major financial investment that should not be taken lightly. The cost of the bird itself is just the tip of the iceberg with the real cost coming later on in the maintenance. For a $500 parrot living 30 yeas, don't be surprised to spend $15,000 over its lifespan (without getting into inflation, net present value, and economics). Of course there is a time component to these expenses and many of them you will incur later on. But let that long term cost govern your decision about acquiring a parrot rather than focusing on merely the cost of the bird by itself. That is only a minuscule part of the money, time, dedication, cleaning, caring, and love you will spend on that feathered friend.
FOOD
I believe there is really no room for feeding on the "cheap".  The bags of seed you grab at the local Mart are not sufficent for a healthy Angel.  Can you do it?  Yes, but you will be plagued with more illness and a shorter life span.  It would be like letting your kids eat fast food everyday, you can do it but it's not healthy.  Your main goal here should be to offer as mush fresh food as possible.  In the wild your bird would NOT be subject to a diet of pellet.  We feed full meals 3 times a day with 2 snacks.  Fresh foods cost more than prossessed foods and can eat up a budget very quickly.  
Nikkie
Naboo after his bath