What didn't favor the KSA ? Their interests were protected in the region , the Persian influence in the region checkmated , their wars fought , their armies trained and best of all - the extension of nuclear protection !
Pakistan's bomb and Saudi Arabia | World news | guardian.co.uk
The Pak-Saudi Nuke, and How to Stop It - Christopher Clary & Mara E. Karlin - The American Interest Magazine
Saudi Govt. Accused of Considering Buying Nukes From Pakistan -- News from Antiwar.com
Saudis consider nuclear bomb | World news | The Guardian
Four years ago, Saudi Arabia sent a defence team to Pakistan to tour its secret nuclear facilities and to be briefed by Abdul Qader Khan, the father of Pakistan's nuclear bomb.
A UN official said: "There's obviously a lot of restlessness in the Middle East. Regional insecurity tends to produce a quest for a nuclear umbrella. The Saudis have the money and could provide it to Pakistan."
It is widely believed that Saudi Arabia has been a sole financier of Pakistan's own integrated atomic bomb project since 1974, a programme founded by former prime minister Zulfi Bhutto.[6][7] In 1980s, Chief Martial Law Administrator and President General Zia-ul-Haq paid a state visit to Saudi Arabia where he unofficially told the King that: "Our achievements are yours".[6] This cooperation was allegedly enhanced by socialist prime minister Benazir Bhutto in 1995 and in 1998, the conservative Prime minister Nawaz Sharif took Saudi Arabia in confidence before ordering the nuclear tests
Since 1998, the Western diplomats and intelligence agencies have long been rumored to have an agreement whereby Pakistan (would) sell Saudi Arabia warheads and its locally developed nuclear technology if security in the Gulf deteriorate, although both countries sharply denied the existence of such agreement between them.[7] In 2003 it was reported that Pakistan and Saudi Arabia had entered a secret agreement on "nuclear cooperation" providing Saudi Arabia with nuclear weapons technology in return for access to cheap oil for Pakistan.[8]
Free lunch , would you say ?
I think we have paid in things far expensive than money
as an answer to your questions - I have listed a few in my posts ...
Unfortunately for you , the pipeline is laid upto Iranian border and the work has begun on the Pakistani side