Cheap alternative chukka boot to C&amp;J Tetbury
Not sure to which country the op is going or how much he wants to spend but I'd go for desert boots every time. If he's coming to the UK Clarks shoes have a huge following and can be found in most places. http://www.google.co.uk/#q=clarks+desert+boots+men&hl=en&prmd=imvns&source=univ&tbm=shop&tbo=u&sa=X&ei=fk6UT4eyDofN8QOPwKDODA&sqi=2&ved=0CJwBEK0E&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=f3881a558318d3eb
Don't get me wrong, I love Clarks desert boots as much as the next guy and wear mine 95% of the time but they're not what I would reach for first in a business environment and I don't know anyone who'd call them slim lasted.
OP, there's nothing about a "hot and dusty" environment that your C&Js can't handle unless you'll be slogging through mud, as long as you follow the usual maintenance routines. But if you must grab a "cheap" pair of relatively slim chukkas then the first thing that comes to my mind is the Loake Kempton which is available in brown suede.